Infra-red generators and use

Details Infra-red generators and use Infra-red generators and use

1983-06-29

1985-02-19

Dority, Jr., Carroll B.

Combustion

Porous, capillary, particulate or sievelike flame holder,...

Means supplying fuel for passage through the flame holding...

F23D 1312

Patent

active

045002835

ABSTRACT:
Improved burner constructions for gas-fired infra-red generators having ceramic fiber matrix through the thickness of which gaseous combustion mixture is passed and as it emerges it is burned to heat emerging surface to incandescence. Burner body can be casting, with sheet metal addition to form a baffle and air-seal and to grip matrix edges. Combustion mixture plenum can have moveable partition assembly separating it from air-seals, to adjust portion of matrix at which incandescence is generated. Metal screen can be stretched in front of incandescent surface to assist with low-temperature operation. Thermal insulation on external portions of burner body can also be held in place with screening. Large size matrix can have central support fitted in joint between matrix segments, and secured to back of burner body. Air-seal can be provided by narrow curtain of air extending around internal faces of burner body. Annealing lehr is desirably provided with gas-fired infra-red irradiation, and can have heat losses reduced by diminishing amount of metal used as in a conveyor to more workpieces through.

REFERENCES:
patent: 3659579 (1972-05-01), Henderson et al.

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